233 system administrator jobs found

Description SAIC is seeking a skilled and motivated System Administrator to join our team onsite in Colorado Springs and will play a key role in managing and advancing our IT infrastructure within a Department of Defense (DoD) environment. In this role, you will be responsible for maintaining robust, secure, and high-performing systems that support mission-critical operations. The ideal candidate brings hands-on experience with enterprise virtualization platforms (Nutanix, VMware, and/or Proxmox), Windows Server administration, and a working knowledge of DoD security compliance standards. You are someone who takes ownership, communicates clearly across teams, and thrives in a regulated, security-first environment. Responsibilities: Install, configure, and maintain Windows Server environments, including Active Directory, Group Policy, and user permissions management. Manage and optimize on-premises Type 1 hypervisor platforms (Nutanix, VMware, Proxmox) to ensure high...

Description SAIC is currently seeking a motivated and experienced System Administrator to join our team at the Pentagon in Arlington, VA. Shift Schedule: Monday-Friday, 6:00 AM to 6:00 PM core hours with occasional after - hours onsite work to support a NIPR and SIPR environment. Responsibilities: Manage currently supported and subsequent Windows Server Operating Systems on virtual operating environments, providing technical oversight and consultation services. Perform complex system administration and security engineering efforts, STIG remediation, advanced GPO implementation and system upgrades. Research and resolve performance, capacity, and other server - related issues. Provide mentorship and guidance to junior systems administrators and other IT staff. Improve efficiencies by documenting and standardizing support processes while capturing and developing best practices. Provide support for the escalation and communication of statuses to leadership to include the...

Description Team SAIC is currently seeking a motivated and experienced Infrastructure System Administrator to join our team at the Pentagon in Arlington, VA. The candidate will be responsible for designing, building, operating, and sustaining highly available server environments. The position oversees InfoScale cluster deployments, failover and recovery capabilities, and enterprise server administration. Responsibilities: Prioritize the work of infrastructure engineers supporting high-availability, server, and lab environments. Plan, build, configure, and maintain InfoScale clusters supporting key strategic partners in the NCR. Develop, execute, document, and improve failover, failback, disaster-recovery, and continuity procedures. Manage physical and virtual servers, including operating-system administration, patching, performance monitoring, capacity planning, and lifecycle replacement. Operate and maintain a test lab that mirrors relevant production configurations...

Description SAIC is seeking a skilled and motivated System Administrator in Colorado Springs, CO to join our team and play a key role in managing and advancing our IT infrastructure within a Department of Defense (DoD) environment. In this role, you will be responsible for maintaining robust, secure, and high-performing systems that support mission-critical operations. The ideal candidate brings hands-on experience with enterprise virtualization platforms (Nutanix, VMware, and/or Proxmox), Windows Server administration, and a working knowledge of DoD security compliance standards. You are someone who takes ownership, communicates clearly across teams, and thrives in a regulated, security-first environment. Responsibilities: Install, configure, and maintain Windows Server environments, including Active Directory, Group Policy, and user permissions management. Manage and optimize on-premises Type 1 hypervisor platforms (Nutanix, VMware, Proxmox) to ensure high availability...

Description SAIC is seeking a highly experienced System Administrator Expeditionary Systems (OpAI) to contribute to the integration of AI capabilities into expeditionary systems, including sensor kits, UxS, C2, and TAK. The successful candidate will play a key role in maintaining the capabilities of expeditionary systems running innovative and cutting-edge technologies. Daily tasks can vary from hands on keyboard to technical discussions, including but not limited to, troubleshooting network connectivity issues, updating software on edge servers, applying Operating System updates to Linux systems, testing machine learning capabilities, and managing delivery of hardware and software to operational forces. THIS IS AN ONSITE ROLE IN SAN DIEGO, CA. WITH UP TO 15% OF TRAVEL INVOLVED JOB DUTIES: Collaborate with cross-functional teams to understand and address the Navy's operational challenges integrating artificial intelligence into expeditionary systems Build and maintain...

Description Description: SAIC has an immediate opening in Virginia Beach, VA (Dam Neck Naval Base) for a Cryptologic Information Technology System Administrator position that performs system administration and maintenance on cryptologic systems used in a training environment. This full-time position is located in Virginia Beach and includes support to other training locations. Support to other sites will be primarily virtual (distance support) but may include travel to Jacksonville FL, Pensacola FL, Everett WA, Pearl Harbor HI, and Yokosuka Japan. Travel is anticipated to be less than 10%. To ensure the systems and training equipment are available for training sites' scheduled courses and other training staff needs, the system administrator may be required to respond to trouble calls outside of normal working hours, although this is not common and is typically scheduled in advance. Job Duties: The Cryptologic IT System Administrator will maintain and perform system...

Description SAIC is currently seeking an experienced Enterprise Computing Applications Monitoring Support (ECAMS) Watch Officer with an Active TS/SCI in support of 24/7/365 operations to join our team at the Pentagon in Arlington, VA. Shift Schedule for this role: 7 p.m.-7 a.m. Thursday - Saturday and every other Wednesday Responsibilities: Provide active onsite operations, monitoring, and troubleshooting of IT systems and subsystems via various tools to support enterprise services to worldwide customer base. Through the use of various IT tools members are expected to identify performance issue, isolate fault(s), correct fault(s), and escalate when necessary within Service Level Agreements. Must be detail oriented and document all worked performed via appropriate ticketing/tracking system Collaborate closely with customers, other teams, and management to resolve incident(s) via verbal and written communications while providing regular updates until...

Description SAIC is seeking a Senior Service Validation and Testing (SVAT) Administrator in Colorado Springs, CO. The Senior Service Validation and Testing (SVAT) Administrator acts as the gatekeeper for IT quality assurance, ensuring that all proposed changes, updates, and new systems meet stringent operational and security standards before entering the production environment. Rooted in ITIL service management principles, this role manages the Test and Integration Laboratory (TIL) and leads the evaluation of system hardening, performance metrics, and configuration compatibility. The incumbent bridges the gap between engineering and operations, guaranteeing that new deployments do not introduce vulnerabilities or instability into the enterprise IT infrastructure. Principal Duties and Responsibilities Service Validation & Testing Lifecycle. Designs, executes, and oversees comprehensive test plans for software patches, system upgrades, and new technology...

Description SAIC is hiring a Windows System Administratorto be located inPensacola, FL. This position requires the ability to assist with the architectural, engineering, administration of Windows infrastructure, as well as participate in the change process and incident response processes. The Windows System Administrator will provide: Desktop support of Windows 11 workstations in a Microsoft Active Directory environment. Microsoft Windows Server 2019, 2022, and 2025 support of virtual and physical servers. Management of VMware virtual environments and virtual networking (virtual distributed switches). Basic networking support to include basic troubleshooting. System patching utilizing Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager (MECM). Conduct system backups and restoral utilizing VEEAM. Verification of system vulnerability compliance by reviewing Security Center / Nessus scans. Verification of system configuration compliance with...

Description Team SAIC is currently seeking a motivated and experienced Organizational Messaging System (OMS) System Administrator to join our team at the Pentagon in Arlington, VA. This role is responsible for the daily operation, administration, monitoring, and maintenance of mission-critical defense and enterprise organizational messaging platforms. This role ensures secure, high-availability message routing across classified and unclassified government networks (including SIPRNET and TIPRNET). The successful candidate will blend specialized messaging gateway expertise with core Windows systems administration, virtualization management, enterprise monitoring, and IT Service Management (ITSM) workflows within a high-tempo Network Operations Center (NOC) or Gateway Operations environment. Responsibilities: Administer, configure, and maintain enterprise organizational messaging platforms, such as Automated Message Handling System (AMHS), Enhanced Communications Gateway...

Description SAIC is seeking a highly motivated and skilled Senior Systems Administrator II - Desktop Support to join our MAJESTIC Joint Program Office (JPO) Team in support of an on-premises enterprise IT environment. This individual will provide desktop maintenance of mission-critical systems and infrastructure, including Windows Servers, Red Hat Enterprise Linux (RHEL), and Nutanix hyper-converged platform solutions. The successful candidate will serve as a member of a dynamic team responsible for ensuring the performance, reliability, and security of a large-scale enterprise IT environment. The Systems Administrator II - Desktop Support will be responsible for desktop administration, patch management, system troubleshooting, and the implementation of new capabilities to meet operational and mission requirements. This role requires direct on-site support in the Springfield, VA location. Key Responsibilities: Perform day-to-day system administration tasks to...

Description SAIC is seeking a highly skilled System Administrator to support the Naval Information Warfare Center Atlantic (NIWC LANT) Cloud Computing Innovation, Transformation, and Integration (CLOUD CITI) Division. The position will involve supporting both physical and virtualized data center environments, including commercial cloud service providers. Candidate must be reside within a 50 mile radius of either Charleston, SC, New Orleans, LA, Norfolk, VA or Tampa, FL. NOTE: On-call rotation every 5th week for a week to address Citrix related outages. Responsibilities: Build, configure, and deploy Citrix Virtual Apps and Desktops (CVAD) systems. Administer, maintain, and troubleshoot CVAD components on Windows Server 2012, 2016, 2019, and 2022. Manage Citrix NetScalers (physical and virtual) to ensure consistent performance and availability. Enforce security compliance by applying DISA STIGs, managing patches, and updating Citrix and Windows environments...

Description SAIC is seeking a highly skilled System Administrator to support the Naval Information Warfare Center Atlantic (NIWC LANT) Cloud Computing Innovation, Transformation, and Integration (CLOUD CITI) Division. The position will involve supporting both physical and virtualized data center environments, including commercial cloud service providers. Candidate must be reside within a 50 mile radius of either Charleston, SC, New Orleans, LA, Norfolk, VA or Tampa, FL. NOTE: On-call rotation every 5th week for a week to address Citrix related outages. Responsibilities: Build, configure, and deploy Citrix Virtual Apps and Desktops (CVAD) systems. Administer, maintain, and troubleshoot CVAD components on Windows Server 2012, 2016, 2019, and 2022. Manage Citrix NetScalers (physical and virtual) to ensure consistent performance and availability. Enforce security compliance by applying DISA STIGs, managing patches, and updating Citrix and Windows environments...

Description SAIC is seeking a highly skilled System Administrator to support the Naval Information Warfare Center Atlantic (NIWC LANT) Cloud Computing Innovation, Transformation, and Integration (CLOUD CITI) Division. The position will involve supporting both physical and virtualized data center environments, including commercial cloud service providers. Candidate must be reside within a 50 mile radius of either Charleston, SC, New Orleans, LA, Norfolk, VA or Tampa, FL. NOTE: On-call rotation every 5th week for a week to address Citrix related outages. Responsibilities: Build, configure, and deploy Citrix Virtual Apps and Desktops (CVAD) systems. Administer, maintain, and troubleshoot CVAD components on Windows Server 2012, 2016, 2019, and 2022. Manage Citrix NetScalers (physical and virtual) to ensure consistent performance and availability. Enforce security compliance by applying DISA STIGs, managing patches, and updating Citrix and Windows environments...

Description SAIC is seeking a highly skilled System Administrator to support the Naval Information Warfare Center Atlantic (NIWC LANT) Cloud Computing Innovation, Transformation, and Integration (CLOUD CITI) Division. The position will involve supporting both physical and virtualized data center environments, including commercial cloud service providers. Candidate must be reside within a 50 mile radius of either Charleston, SC, New Orleans, LA, Norfolk, VA or Tampa, FL. NOTE: On-call rotation every 5th week for a week to address Citrix related outages. Responsibilities: Build, configure, and deploy Citrix Virtual Apps and Desktops (CVAD) systems. Administer, maintain, and troubleshoot CVAD components on Windows Server 2012, 2016, 2019, and 2022. Manage Citrix NetScalers (physical and virtual) to ensure consistent performance and availability. Enforce security compliance by applying DISA STIGs, managing patches, and updating Citrix and Windows environments...

Description SAIC is seeking a Senior Riverbed System Engineer to serve as a senior technical authority for Riverbed performance monitoring, digital experience management, and network visibility platforms across the enterprise environment located at MacDill AFB, FL. This role is responsible for engineering, administration, optimization, cybersecurity compliance, and lifecycle management of Riverbed technologies excluding SteelHead WAN optimization appliances. The Senior Riverbed System Engineer will be responsible for but not limited to the following duties: Design, implement, and document secure Riverbed monitoring architectures and data flows across NIPR, SIPR, and SOCRATES enclaves. Engineer scalable, interoperable deployments for hybrid, virtual, and physical infrastructures, ensuring enclave segmentation and cross-domain compliance. Integrate Riverbed platforms with SIEM, ITSM, cybersecurity, and enterprise monitoring tools. Provide Tier II/III engineering...

Description SAIC is seeking a Senior Riverbed System Engineer to serve as a senior technical authority for Riverbed performance monitoring, digital experience management, and network visibility platforms across the enterprise environment located at MacDill AFB, FL. This role is responsible for engineering, administration, optimization, cybersecurity compliance, and lifecycle management of Riverbed technologies excluding SteelHead WAN optimization appliances. The Senior Riverbed System Engineer will be responsible for but not limited to the following duties: Design, implement, and document secure Riverbed monitoring architectures and data flows across NIPR, SIPR, and SOCRATES enclaves. Engineer scalable, interoperable deployments for hybrid, virtual, and physical infrastructures, ensuring enclave segmentation and cross-domain compliance. Integrate Riverbed platforms with SIEM, ITSM, cybersecurity, and enterprise monitoring tools. Provide Tier II/III engineering...

Description SAIC is seeking a Cloud Systems Engineer to provide provision of Global Enterprise IT services, specifically focusing the design and management of the core cloud infrastructure. With a deep understanding of AWS & Azure service such as EC2/Azure Virtual Machines, VPC/Virtual Networks and S3/Storage accounts. In addition to these responsibilities, the Cloud Engineer create and maintain the foundational elements that support cloud applications and services. The Engineer is expected to deliver Tier 3 level support to SITEC 3 EOM mission partners. This critical support role involves the diagnosis, troubleshooting, and resolution of system outages, all while guaranteeing optimal service uptime and mission operational capabilities. The Cloud Systems Engineer is a pivotal role within our IT infrastructure team, providing tier three systems support in line with the SIE OPORD. This position demands a comprehensive understanding of government PAAS, SAAS coupled with...

Description SAIC is seeking a Cloud Systems Engineer to provide provision of Global Enterprise IT services, specifically focusing the design and management of the core cloud infrastructure. With a deep understanding of AWS & Azure service such as EC2/Azure Virtual Machines, VPC/Virtual Networks and S3/Storage accounts. In addition to these responsibilities, the Cloud Engineer create and maintain the foundational elements that support cloud applications and services. The Engineer is expected to deliver Tier 3 level support to SITEC 3 EOM mission partners. This critical support role involves the diagnosis, troubleshooting, and resolution of system outages, all while guaranteeing optimal service uptime and mission operational capabilities. The Cloud Systems Engineer is a pivotal role within our IT infrastructure team, providing tier three systems support in line with the SIE OPORD. This position demands a comprehensive understanding of government PAAS, SAAS coupled with...

Description The Riverbed SME (Subject Matter Expert) System Engineer serves as the senior technical authority for Riverbed performance monitoring, digital experience management, and network visibility platforms across the enterprise environment. This role is responsible for engineering, administration, optimization, cybersecurity compliance, and lifecycle management of Riverbed technologies excluding SteelHead WAN optimization appliances. The engineer will operate within and support multiple classified and unclassified environments, ensuring secure, compliant, and highly available performance monitoring capabilities across J6 mission systems. This position supports operations within the following enclaves: NIPR (Non-classified Internet Protocol Router Network) SIPR (Secret Internet Protocol Router Network) SOCRATES (as defined by the supported command architecture) The Riverbed SME will manage and support the following suites, as deployed:...